How to be ready when it comes to selling?

I currently have 75% of my crypto on cold storage and 25% on exchange and yesterday I was thinking about when it comes to selling.

I am not thinking of selling anything just yet but maybe will start in a few months once the halving is here and the market starts to really move.

Is it a good idea to still have most of my crypto on cold storage in a few months when the market is pumping and I am wanting to sell or is it best to start moving everything to exchanges which will then make it easier to sell?

I am just thinking it will be a long process having everything on my cold storage and then seeing the market pumping then having to send everything back over to exchange I may miss the best prices to sell as it will take some time to send everything from cold wallet to exchange.

I understand it is more safe to have crypto on cold storage but is it less likely in the peak of a bull run for exchanges to fall? If so, I feel it would be better to send all of my crypto to exchange in advance to then be ready to sell everything.

This may be obvious to some but this is my first bull run and want to be ready when it comes to selling and I am just not sure what is best way of planning to sell.